Restart your VM from within the serial console blade to access GRUB on your Linux VM.

More details are available at Detailed SSH troubleshooting steps for issues connecting to a Linux VM in Azure A troubleshooting guide is available at Troubleshoot SSH connections to an Azure Linux VM that fails, errors out, or is refused. Serial console can be used regardless of the SSH configuration of a VM as it does not require the VM to have network connectivity to work. Please see the serial console section of Azure Linux VM cannot start because of file system errors for more details on troubleshooting corrupted file systems using the serial console.Īccess the serial console and change the settings. More details can be found in the firewalld documentation. Similarly, if your firewalld is blocking SSH access, you can access the VM through serial console and reconfigure firewalld. More details can be found at the iptables man page. If you have configured iptables to block SSH connectivity, you can use serial console to interact with your VM without needing SSH. For more information, see the serial console section of How to fix fstab issues and Use serial console to access GRUB and single user mode. You might need to be in single user mode to do so. Press the Enter key to continue and use a text editor to fix the FSTAB file. Common scenarios for accessing the Serial Console Scenario The configuration file is typically located in the /boot/ path. If you're building a custom kernel, consider enabling these kernel flags: CONFIG_SERIAL_8250=y and CONFIG_MAGIC_SYSRQ_SERIAL=y. For more information on configuring a custom image to work with the serial console, see the general system requirements at Create and upload a Linux VHD in Azure. This can be done with systemctl start will also want to add ttys0 as the destination for serial output. You may also need to spawn a getty on ttyS0. To enable the serial console for your custom Linux VM image, enable console access in the file /etc/inittab to run a terminal on ttyS0. If you're using older versions (10 or earlier) of SLES on Azure, see the KB article to enable serial console. Newer SLES images available on Azure have serial console access enabled by default. Serial console access enabled by default. Hitting Enter will often fix issues where nothing is showing up in the serial console.

If you are not seeing anything in the serial console, make sure that boot diagnostics is enabled on your VM.

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